The quality of the cycloid reducer has an important impact on the production and life of the society.Therefore, when choosing a cycloid reducer, we must be optimistic about the quality of the cycloid reducer, and ensure that the quality of the cycloid reducer is the most important.So how do you choose a cycloid reducer?How to judge the quality of cycloid reducer?Let me teach you some tips below.
When the cycloidal reducer is running or fails, you can prevent and eliminate the fault in time by observing, listening, smelling and touching to ensure the safe operation of the cycloidal reducer.
one look
Observe whether there is any abnormality during the operation of the cycloid reducer, mainly in the following situations.
1. When the stator winding is short-circuited, the cycloid reducer may see smoke.
2. When the cycloidal reducer is seriously overloaded or running with a lack of phase, the speed will slow down and there will be a heavier 'click' sound.
3. The maintenance network of the cycloidal reducer is running normally, but when it stops suddenly, the loose connection will emit sparks; the fuse is blown or the parts are stuck.
4. If the cycloidal reducer vibrates violently, it may be that the transmission is stuck or the cycloidal reducer is not fixed properly and the foot bolts are loose.
5. If there are discoloration, burn marks and smoke marks on the contact points and joints of the cycloidal reducer, it may indicate local overheating, poor contact at the conductor connection or burnt windings.
Second listening
When the cycloidal reducer is running normally, it should make a uniform and light 'click' sound, without noise and special sound.If the noise is too loud, including electromagnetic noise, bearing noise, ventilation noise, mechanical friction, etc., it may be a fault or a symptom of a fault.
1. For electromagnetic noise, if the cycloid reducer emits high, low and heavy sounds, the reasons may be as follows.
(1) The air gap between the stator and rotor is uneven.At this time, the sound is high and low, and the interval between high and low sounds is constant.This is caused by the wear of the bearings and the difference between the stator and rotor.
(2) The three-phase current is unbalanced.This is the reason for the wrong grounding, short circuit or poor contact of the three-phase winding.If the sound is very blunt, the cycloidal reducer is seriously overloaded or running in phase loss.
(3) The core is loose.When the cycloidal reducer is running, the iron core fixing bolts will loosen due to vibration, and the iron core silicon steel sheet will loosen to generate noise.
2. For bearing noise, it should be monitored frequently during the operation of the cycloid reducer.The monitoring method is: the end of the screwdriver leans against the bearing installation part, and the other end is close to the ear, and the sound of the bearing running can be heard.If the bearing is running normally, its sound is continuous, a small 'sand' sound, and there is no change in height and friction, as well as metal friction.If the following sound occurs, it indicates abnormality.
(1) There is a 'squeak' sound when the bearing is running.This is a metal rubbing sound, usually caused by a lack of oil in the bearings.Bearings should be disassembled and filled with an appropriate amount of grease.(2) If there is a 'click' sound, it means the sound made when the ball rotates.Generally, the oil is dry or lacking in oil, and an appropriate amount of oil can be added.
(3) If there is a 'snake' sound or a 'click' sound, it is the sound produced by the irregular movement of the ball shaft in the bearing.This is caused by damage to the balls in the bearing or the long-term use of the cycloidal reducer and the drying of the grease.
3. If the transmission mechanism and the transmission mechanism make a continuous sound instead of high and low, it can be dealt with in the following situations.
(1) Periodic 'popping' sounds caused by uneven belt joints.
(2) Periodic 'booming' sounds caused by the loose coupling between the coupling or the pulley and the shaft and the wear of the key or keyway.
(3) The collision between the fan blade and the fan cover causes uneven collision sound.
Three smells
The fault can also be judged and prevented by smelling the smell of the cycloid reducer.Open the junction box and smell it with your nose.Check for burnt smell.If a special paint smell is found, the internal temperature of the cycloid reducer is too high.If you notice a thick mush or a burnt smell, the insulation may be cracked or the coils may be burnt.If there is no smell, it must be measured that the insulation resistance between the winding and the casing is less than 0.5 trillion, and it must be dried.Zero resistance means it's broken.
four touches
Touching the temperature of some parts of the cycloid reducer can also determine the cause of the failure.To ensure safety, please touch the cycloid reducer casing and parts around the bearing with the back of your hand when touching.If the temperature is abnormal, the reasons may be as follows.
1. Poor ventilation.If the fan is off, the air duct is blocked.
2. Overload.Too much current to overheat the stator windings.
3. Turn-to-turn short circuit of the stator winding or unbalanced three-phase current.
4. Frequent starting or braking.
5. If the temperature around the bearing is too high, it may be caused by bearing damage or lack of oil.
This is the 'soil' method of using the residual magnetic force of the cycloid reducer to check the winding.If the winding is burnt, the hand will certainly not move.
